Circuit closer



May 18 1926.

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sssg'lo J. R. MOOR y CIRGUIT CLOSER Filed April 11 1922 /5 /o K una@ (i In um e @trol-Hel' rarest ortie.

JAMES R. MOOR, F SOKANE, YYVASHENGTON'.

CIRCUIT CLOSER.

Application filed April 11, 1922.

Mi.' present invention relates to improvei in lire "l i'nlfs o'i the electrical, Tvoe in which an electrical circuit 'held open through the instr' mentality' ot a cord or cable under tension. The device or apparatus also includes an audible signal or bell within the nori ially open circuit, which bell or signal is operated when the cord broken by torce applied thereto. The severof the normally taut cord Jpermits the closing;` ot the signal circuit, thus giving the alarm tor tire, or tor burglary when the apparat-us is installed 'lor the latter purpose. rlhe alarm is adaptable for use eitner in homes or industrial plants and is capable of.,

beings; installed withtacility and at comparatively slight expense. Provision is also made tor testing the installation for the purpose ot ascertaining' and insuring' proper working,i conditionsot the alarm system.

The invention consists' in the combination and arrangement ot parts as will be hereinafter more fully described in detail and r pointed out in my appended claim.

ln the accompanying drawings l have illustrated one complete example ot the physical embodiment of my invention wherein the alarin is installed tor domestic use and the parts combined and arranged according to the best mode l have thus tar devised for the practical application of the principles or vmy invention. t

Figure l is a view illustrating in diagrammatic torni, the tire alarm installed in a building'.

Figure 2 is a View ot the annunciator, including a signal hell, and illustrating a pull cord at the exterior thereof, as part of a testing;` device.

Figure 3 is a view ot the annunciator or signal device with the door open disclosing the electric batte 'ies or cells.

Figure 4 is a top plan view ot the signal device.

Figure 5 is an enlarged, detail view showing the circuit maker or switch and connec tions.

ln order to illustrate the relation of parts l have indicated a house or building 1 in which the alarm device is installed, the audible signal in this instance being a bell 2 attached at the exterior ot a box or casing` 3 which is the container tor the battery 4. The box or casing is located at a suitable the house where the ringing et the is severed as by burning, or'

Sclial No.v 551,629.

hell 2 may readily be heard, as a signal, and the alarm switch r circuit maker as also conveniently installed in the box or casing. For this purpose a base board or plate 5 is employed and located in the upper part of the casing` indicated in Figure 3. On the base board is supported a movable contact member or switch arm 6 of proper conducting material, and the metal arm is adapted to swing on the pin 7 as a pivot, the latter being secured in the base board in suitable manner. A spring 8 has one end attached to the switch arm and another end attached to the switch or base board as an anchor, and the sprintf, under tension, urges the switch arm to swing' toward the fixed or stationary contact point 9 on the board 5. rlhe position shown in dotted line tor the switch arm indicates a closed circuit condition, brought about by the action of the spring.

The movable switch arm is held in normal condition with the circuit broken, as shown in Figure 5, by a cord 10, retained under tension, and attached at ll to the movable switch arm. This cord is ot' required length to be run over certain areas, as tor instance across window openings, door openings, or other similar places, and the cord is placed in position where it can be broken by opening a window or door. For thermal indications the cord is extended over areas where fire or excessive heat is likely to develop. ln the former instance the cord may be severed or broken.

ZES

Vb 'force while in the latter instance the cord may be burned. ln stretching or installing' the cord, it is extended from the switch arm and passed around anti-friction rollers as l2, or passed through fixed eyelets as 13, the required number of rollers and eyelets being employed to guide and hold the wire suspended. For special occasions and uses, combustible fuses as 14 may be interposed in the signal line or cord, which `fuses will readily burn away Linder excessive heat and sever the cord. For holding the cord under tension, I utilize a spring,` l5 attached at the end ot the cord, and the spring at its other end is attached to a -ixed support as a nail 16. Thus the cord is attached to the switch arm and extended over the area to be protected, as along walls, across ceilings, and through other spaces as required, and passes around the pulley or pulleys il?. and through the eyes i3 as fra bends or turns'. After the cord has been pulled taut, with the arin 6 in position as indieefed in Figure 5, Jldie Spring l5 at the end ol the cord is exended te hoek over the neil 16. and by ineens of the Spring Jthe eord is held laut as Shown. Yfor any reason the eord 1S severed ietW-een heV spring' l5 and the switch ar n? die arn. is

released and ia 'free o be swung fo lille lel't by Spring 8 (in l`igure and caused co ntaet Wih the e Kitch p mit or terminal 9.

The two terminale or posta 7 and 9 are eenneei'aed by Jdie respeeiye v'iree ll and l 1S lo the bell or Sigi al 2, and the swinging inoi'einenlv ol he swii` under impulse of Spring S clos/S the Cir: it Causii'ip; the bell ring; and gire al? ni or burglar a`arni as lhe For reeling die el il eonneerllns lo aseeriain il the circuit may be erenerfy closed, ll utilize a second a eondueing ineal, piyole-.fl oi 't pin T, an'l normally lying againft; ille sn'ich arinL prooer. Nhen he cord is broken liie aurriary arni lf) foi-ine a part C t1 (e Civ/1 w l .VY, W ;l e l or ne n l el alla an@ aan e nu i ,L un( ei impulse Jdie Sprn, S. lgut the auxiliary arm, in addition, is eaoable o'ff movement independent el lhe maia Swil'eli arin. Thus by pulling the eerd Q0 that hangs outside the box 3, and is attached to lhe auxiliary Snfilteh arni Within the box, the auxiliary arin may be swung Le close lhe circuit, and if the electrical Connections are in normal and eorreet Condition, the signal bell will ary a able nor' .al 'features may be periodically and tested, and maintained in proper ing; condition. A

Having llius Yfully described in; tiem what l Claim as nenY and d# secure by 'Lettere Patent ieln a lire alarm a circuit n'ialer iueludine a pair ol' separable pire/led Swil'h ar inally lying` in Close eleeirical conta-.gt

Suppering iern'iinal post il'oznun'i a piyel' 'for said mima. a Cord alla liree end oli one ol' sau arme and a attached lo the cord for holding); 'ille aller under tenaien, a SaiOnary Jreriuinal poel in Jche palb of niofenient el libe Fira-uit inaller, and a pull Lord al'aeliel to ille free end elf the other aria whereby said ai' le niay be separated and the second arin merezl indepeni'lenly of the lirst arin le "-eulaeiwith Vlihe Stationary terminal post.

ln testimony whereof allix lay sienature.

MES R. MO Oil. 

